Support for incandescent electric lamps.



PATENTED JULY 17, 1906. A. ROMAINK; J..DAYGUESVIVES. SUPPORT FOR INOANDESOENT ELECTRIC LAMPS.

APPLICATION FILE SEPT. 611904.

Nel saass'a UNTEI) STATES Application filed September 6, Serial No. 223,456

' 17:9" all whom it ma y concern:

m 1903, which has a Be it knownthat we, AnoLPHE RoMArNand.

' JEAN nAYGUEsvI-vE's, citizens of France, residing at Paris, France,

have invented new 5 and useful Improvements in Supports for In- .candescent Electric Lamps, (for which an ap'-' plication for a patent of addition of French has been filed Patent. No. 23%{948, dated March.- 29, 1902,11.

France on September 17, not yet been delivered) of which the following is a specification.

In Patent N 0. 756,412, of April 5,1904, cer-- tain improvements are described and claimed in supports for incandescent electric lamps, 1 5 said improvements relating,

on the one hand, to thespecial manner in which the connection of the currentis efiected in the case of a screw- Support and, on the other hand, to the general construction of the support whether it be a a0 screw-lamp or one with a bayonet-joint, such construction allowing in particular. of a support being arrangedfor, a multiple joint without its being necessary to make splices.

, k This invention has {for its object various 125 modifications-in the construction of the said supports with the obj ect of adding to the advantages obtained by the improved supports "forming the object bf Patent No. 756,412

" those of great simplicity of construction, ca-

s 0. .pability of rapid mounting, total suppression {of wires placed the interior of the support,

and lII the case? ofa support for a multiplejoint the possibility of grouping in series the lamps having this j int.

To allow oi the i vez'itio'n being better. understood, reference will now be made to the accompanying drawings,in which, as an. eX-.

ample, Figure 1 is aview, in partial sectional elevation, of a bayonet-joint support for a sino gle lamp; Fig. 2, a view, in sectional elevation,

ofthe head of a screw-support analogous to the foregoing; Fig. 3, a View, in partial sec tional elevation, of a support arrangedfor a multiple. joint comprisingfour lamps; Fig. 4,

4 5 a plan view of the part effecting the distribution of the current to the four lamps of the oint mentioned in theforegoing figure, said lamps being mounted in parallel; Figs. 5, 6, and 7 are respectively an elevation, plan view, and View from beneathofithe same part arranged for effecting the distribution of the.

current to four lamps mounted in series.

Specification of Letters Patent- Eaten I samfe springs 1 1 12.

"eATENr orrronl suPPoRT FOR moANDEscENr ELECTRIC. AMPS.-

1 7, recs.

The same reference-nume parts in the various figures. v The bayonet-joint. support shown in Fig. 1 comprises aninsulating portion 1, inl'which twometallic cylinders 5 and 6, {the solid ends the part 1, are mounted in anygsui-tablema-n ne'r. Two pistons 7 and 8, constantly pushed 13 and 14 of which touch the upper-surfaceiof' outwardly by theaction of springs'l 1' and 12,

are mounted in the interior of these cylinders. These pistons bear on the terminals 24 of a bipolar circuitbreaking arrangement arran ed absolutely similarly to the one descrioed in Patent No. 756,412., The lower terminals 25 of this circuit-breaker come in contact with two pistons 9 10, arrange'd in the interior of two metal cylinders 21 22, mounted in an insulated portion 4, in the same man-,

ner as cylinders 5 6. The ends-of the cylinders-21 22 allow pistons 29 and 30 to pass,

which pistons are subjected, with the pistons 9 and 10, to, the action of springs-17 and 18, which push them constantly toward the outside.

4 and of the circuit-breakingarrangement which connects them is firmly held in the following manner: The portion 1 is fitted into a truncated conicalsocket 19, the base of whichis threaded, while the portion 4 is fitted into a shell 3, connected withthe-socket 19 by means of a threaded ring 20. Finally the support has holes 28,such as are provided in Patent No. 756,412, for allowing the gas to escape which arises from the fusion of a lead I plug in case of a short circuit, Under these conditions of arrangement it is evident that the improvedsupport hereinbefore described has the following improvements on the one The whole of the insulated portions land which is shown in Fig.4 of the drawings ac- 4 companying Patent No. 7 56,412 The screwthreaded rods 7 and 8, of. the support. de-" scribed in Patent No, 756,412 are re laced by the pistons 7 8, the contact of whic with the terminals 24 of the GlICIllt-blfikef is absolutely insured, owing to the pressure of the latter, which in the support describedin Patent No. 756,412 was efiectedby means of wires 17 and 18, mounted on angle, pieces or channels 9 and 10, isnOWefiected in a much more certain manner, doing away with the The supply of current to the is desired to mount the lam and 10, and, the wires 17 wires in the interior of the support by means The multiple connection shown in Fig. 3 of of the double pistons 9 and 10 29. The result is a very great simplinityin the mount ingot the apparatus, absolute certainty in its working, and a reduction of almost onequarter in the length of the apparatuawhich is'a-particularly advantageous result when it s in a multiple joint and provide them wit individual circuitbreakers.- It is important to point out the threaded rods 7 and 8, the angle-pieces 9 and 18 (indicated in Patent No.- 756,412) to be replaced by the pistons7 8 and 9 16 is based on the factthat the contacts are made absolutely certain, as

they are made by current-taking blockswhich are heldconstantly pressed against the terminals of the circuit-breaker, and that consequently the arrangement of spring-pistons, represented as an example in the accompanying drawings, might other similar arrangement able to insure pressure-contacts against the terminals 24 and 25 of the circuit-breaker by fixing at the lower extremity of the cylinders 5 6 and at the upper extremity, of the cylinders 21 22 small metal strips bent back in a U form, andthus'forming pressure-contacts against the terminals 24 and 25 of the circuit-breaker; Any way the characteristic feature of this inrprove nent is to place .the terminals-of circuit breaker' in communication with the wires of the working circuit and with the wires of'the lamp by the intermediary of "spring-blocks arranged in any suitable man- Patent No. 756,412 is here replaced by a y the threaded socketZ and conveying current port ner (springpistons,hent strips, or the like) in order that they may be maintained constantly pressed against the terminals of the circuit-breaker.v i

The screw-support described in Patent No. 756,412 comprises naturally the same improvements as those which have been de' scribed in connection with a bayonet-support; It retains, as in the case of Patent No. 756,412, the current-taker at the side; but. this ourrent-taker has been further simplified, as is shown in Fig. 2 of the drawings accompanying .the present application. The metallic side piece 15 for taking current in. the case of screw with a countersunk head 15 buried in to the internal cylinder .5. 'As regards the second cylinder 6 the communication with the other current-taking terminal is insured by a screw 34, buried in the upper conducting-plate l6 and engziging in the end 14 of the said cylinder. The simplicity of mounting and the security of 'working of a screw-suparranged under these conditions is suflicientlyevident without its being further insisted on.

the I be replaced by any lamps of i to be grouped in seriesby modifying slig the accompanyingv -drawings comprises an upper part arranged absolutely in the same. manner asin'the case of a supportfor a sin-' gle lamp. This upper part is connected with j 3 the lower part, carrying the lamp socketsby means of a peculiar piece. (Shown in elevation in Fig. 3 and in plan View I piece is'arranged in the following manner: In

a portion of insulating material 2-3fj'ofconical form and provided with a two metallic strips 24, constituting'two'fof the poles ranged as in the 'case ofFig. 1, areplaced', the

large circular base .75 of. a bipolar circuit breaker arother two poles of said circuit-breaker being passing through the insulating material of respectively, one .of them' the portion 23, he other with-aring 36, sim1-' lar to he foregoing, by means of a screw 38.- The intermediate piece. 23 thus arranged is fixed in any suitable manner on the lower I part, carrying the lampsockets, for instance, by means of a pressure screw arranged onthe am 20 of the said'partand en aging in lateral notches '51'in the part 23'. Under these conditions all the pistons!) of the sockets receiving the lamps of thejoint rest on the ring 35, and allthe pistons 10 of these same sockets rest on the ring-36., It follows from this that the lamps of this multiple joint are grouped" in parallel, the cur- IOC rent arriving, for instance, by the piston 7 passing'by the termin'al 24, circuit-breaker 26, terminal 25, and screw 37 tothe ring 35, circulating through the lamps, which return it to the ring 36, from whence it returns to the discharge-piston Sby the screwv 38,;terminal 25, circuit-breaker 26,

and terminal 24. Consequently if each, ofthe lamps of such a joint be provided with a support=ha-ving a.circuitbreaker similar to the one which is shown in Fig. 1 one of the lamps might be extinguished without the other three ceasing to give light. V Y

i It is immediately evident that the improved arrangement distributing the current to the a joint has all the advantages which have been hereinbefore enumerated with regard to further,

' htly the arrangement of the part carrying the circuit-breaker, as shown in Figs. 5, 6. and '7 of the accompanying drawings.

The pistons strips 24", comn-iunicating, respectively, by the screws 39 and 50 Hill two insulated methe support for a. single lamp; and, it enables the lamps of the'said oint 7 and 8 in this case come in 7 contact with the two insulated metallic tallic segments 40 and 42, cut out in-a ring similar tothe-ring of the previously-described support. This ring comprises two other similar segments 41 and 43, communieating, respectively, by means of screws 46 and 49 with two insulated metallic strips 47 and 48, interconnected by acircuit-breaker 2B" identical with those already described.

Each of the pistons 9 of the sockets receiving the lamps of the joint comes in contact with one of'the segments 41 42 43, while the pistons 10 of two adjacent lamps come in contacttwo by two with'one of the two insulated metallic segments 4445, arranged at Under these conditions of arrangement the four the lower extremity of the part 23".

lamps of the joint are grouped in series. In fact, the current arrivi-n for instance, by

the strip 24f passes by t e screw 39 to the segment 40, passes through the first lamp and into the segment 44, which introduces it to the'second lamp, whence it passes the segment 44,- which conveys it to the circuitbreaker 26 by the screw 46 and the strip 47 The circuit-breaker then conducts it to the strip 48, whence-it passes "to the segment 43 byjthe screw 49'and so into the third lamp,"

' It emerges therefrom by the segment 45,

which introduces it to the fourth lamp, from whence it returns finally to the exit-strip 24" by the intermediary 'of the segments 42 and the screw 50.

The grouping in series of the lamps of a multiple .joint enables a very appreciable industrial result to be obtained. In fact, it is well known that lamps'grouped in parallel work individually under the voltage of the working circuit, say, generally at a voltage from one hundred and ten to one hundred and fifteen volts. lVith lamps rouped in series, on the contrary, each of t em works at a voltage equal to the Voltage ofthe working circuit divided by the number of lamps of the ointsay about twenty-eight volts in the case of four lampsand.this method of working enables very great economy in the expenditure in electricity to be obtained.

Of course in the case of supports formultiple joints, similarly to whatmay be donein the,

case of such a support for a single lamp,.the pistons 7 8 and 9 10 may be replaced by the bent-back metallic strips which have been 'hereinbefore specified injthe description of the supportfor a single lamp. Supports for multiple joints may also. be, made with screwedsockets taking the current from the side, such as has been hreinbefore specified and'shown in' Fi 1 2 of the accompanyin drawings.- It is a so evident that thismetho of grouping in series the lamps of a'join-tby means of segments -40, 41, 43, and 44 45 is applicable not onlywhere the said segments m: arranged in two concentric circ1'es',-,but

also where these segments are arranged in a straight line, which application is particularly interesting in the case of lines of lamps, such as the foot-lights in a theater, forinstance.

declare that what we claim is I 1, A "support for incandescent electric supporting a lamp, a middle portion, means carried by-said middle portion for connecting .upper-andlower portions, said means comprising a circuit-breaker and an external coupling-ring joining together the three tions, substantially as described.

2. A suppprt for incandescent electric lamps comprising an upper insulated portion, two resilient contacts in said portion, said contacts each consisting of a metaLlic'cyL inder, a metallic piston in said ;-cylinder and a spring in said cylinder for normally sulated portion, a plurality of shell's' carried thereby, two resilient contacts in each shell each contact comprising a metallic cylinder, a piston in each end thereof and a spring in t e cylinder for pressing the pistons ,outwardly, a middle portion including two insuwith the two .pistons'of the resilient contacts the upper portion, two insulated contact rings ,coactuig lrespectively with lated contact plates' respectively connected breakers joining-the two last-named contactplate's and an external coupling-Tingjoining together the three portions substantially as jdescribe'd. V

"3. A support, {fir incandescent electric I iipper-insulated portion, Ltnvo resilient cont (its said/portion, each i a nietallic cylmder, a pis-l spring in the cylinder lamps comprising i'each shell, and two of said segments being lamps comprising an upper portion adapted .to be connectedwith the wires of the working circuit, a lower-portion, means thereon for electrically with jone of said rings, circfifl thereby; tw'o' re'si ient contacts in each shell,

'tjvo upper pistons of the resilient contacts in '75 I electrically. and in a removable manner the 'pressing t piston wardly; .a lower in- I lated contact-plates coacting respectivelyone .of the two upper pistons of the resilient cOntactsii /each shell, and two insu'- IOO plates with the ffirst-mentioned' contact-' eleotrieall conneeted t0 the two aforesaid names to this specifioation in the presence of I 'o'ontact p ates, while the segments of the seethe subscribing witnesses. -ondset connect two by two the other of the v, ADOLPHE' ROMAIN said pistons,- msulated contact-plates, con- 1 7 5 neoted respectively-t0 the remaining seg- JEAN D A1 GUESVIVES' ments' of the first set, circuit-breakers joining Witnesses as to Adolphe Romain; the last-named.contact-plates together two HANSON C. C KE,

by'two and an external coupling-ring joining EUGENE PIEHOM.

together the three portions, substantially as Witnesses as to dAyguesvives: 10 described. JOSEPH VALISEANE,

In testimony whereof W hav a signed our ALEXANDER BEIUROTT. 

